Sufyan narrated it with the same meaning, but did not mention the plucking of dates and the harvesting. Sufyan said: They asked Ja'far about sacrificing at night, and he said: No. Sufyan said: This (prohibition) concerns the situation of the poor.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19201